* Broken NFS (perhaps Cache invalidation bug ?)
@ 2006-02-07 2:49 L. D. Marks
2006-02-07 2:52 ` L. D. Marks
2006-02-07 3:10 ` Trond Myklebust
0 siblings, 2 replies; 4+ messages in thread
From: L. D. Marks @ 2006-02-07 2:49 UTC (permalink / raw)
To: linux-kernel
I have a problem which appears to be very similar to a cache invalidation
bug previously reported:
http://www.ussg.iu.edu/hypermail/linux/kernel/0510.1/0582.html
With a conventional nfs mount (not automount), c0-0 a client node,
running on the nfs server:
echo 10 > Probe
ssh -x c0-0 cat Probe
echo 11 > Probe
ssh -x c0-0 cat Probe
Will give, most times, 10 & 10 rather than 10 & 11.
I've tried a wide range of things (including consulting local experts),
so far nothing. I'm not a kernel developer, so please be gentle. This
problem has occurred ever since we moved to the 4.X releases of rocks
(http://www.rocksclusters.org), X=0 or 1 although it's hidden by their
default use of automounting and it's taken some time to reduce it to
something simple.
-----------------------------------------------
Laurence Marks
Department of Materials Science and Engineering
MSE Rm 2036 Cook Hall
2220 N Campus Drive
Northwestern University
Evanston, IL 60201, USA
Tel: (847) 491-3996 Fax: (847) 491-7820
email: L-marks at northwestern dot edu
http://www.numis.northwestern.edu
-----------------------------------------------
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Broken NFS (perhaps Cache invalidation bug ?)
2006-02-07 2:49 Broken NFS (perhaps Cache invalidation bug ?) L. D. Marks
@ 2006-02-07 2:52 ` L. D. Marks
2006-02-07 12:31 ` Alan Cox
2006-02-07 3:10 ` Trond Myklebust
1 sibling, 1 reply; 4+ messages in thread
From: L. D. Marks @ 2006-02-07 2:52 UTC (permalink / raw)
To: linux-kernel
I should have added the kernel: 2.6.9-22.0.2.ELsmp #1 SMP with
nfs-utils-1.0.6-65.EL4
On Mon, 6 Feb 2006, L. D. Marks wrote:
> I have a problem which appears to be very similar to a cache invalidation bug
> previously reported:
> http://www.ussg.iu.edu/hypermail/linux/kernel/0510.1/0582.html
>
> With a conventional nfs mount (not automount), c0-0 a client node, running on
> the nfs server:
>
> echo 10 > Probe
> ssh -x c0-0 cat Probe
> echo 11 > Probe
> ssh -x c0-0 cat Probe
>
> Will give, most times, 10 & 10 rather than 10 & 11.
>
> I've tried a wide range of things (including consulting local experts), so
> far nothing. I'm not a kernel developer, so please be gentle. This problem
> has occurred ever since we moved to the 4.X releases of rocks
> (http://www.rocksclusters.org), X=0 or 1 although it's hidden by their
> default use of automounting and it's taken some time to reduce it to
> something simple.
>
> -----------------------------------------------
> Laurence Marks
> Department of Materials Science and Engineering
> MSE Rm 2036 Cook Hall
> 2220 N Campus Drive
> Northwestern University
> Evanston, IL 60201, USA
> Tel: (847) 491-3996 Fax: (847) 491-7820
> email: L-marks at northwestern dot edu
> http://www.numis.northwestern.edu
> -----------------------------------------------
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> Please read the FAQ at http://www.tux.org/lkml/
>
Note: if you have an old email address for me, please note that "nwu" has
been changed to "northwestern".
-----------------------------------------------
Laurence Marks
Department of Materials Science and Engineering
MSE Rm 2036 Cook Hall
2220 N Campus Drive
Northwestern University
Evanston, IL 60201, USA
Tel: (847) 491-3996 Fax: (847) 491-7820
email: L-marks at northwestern dot edu
http://www.numis.northwestern.edu
-----------------------------------------------
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Broken NFS (perhaps Cache invalidation bug ?)
2006-02-07 2:49 Broken NFS (perhaps Cache invalidation bug ?) L. D. Marks
2006-02-07 2:52 ` L. D. Marks
@ 2006-02-07 3:10 ` Trond Myklebust
1 sibling, 0 replies; 4+ messages in thread
From: Trond Myklebust @ 2006-02-07 3:10 UTC (permalink / raw)
To: L. D. Marks; +Cc: linux-kernel
On Mon, 2006-02-06 at 20:49 -0600, L. D. Marks wrote:
> I have a problem which appears to be very similar to a cache invalidation
> bug previously reported:
> http://www.ussg.iu.edu/hypermail/linux/kernel/0510.1/0582.html
>
Which should be fixed.
Cheers,
Trond
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Broken NFS (perhaps Cache invalidation bug ?)
2006-02-07 2:52 ` L. D. Marks
@ 2006-02-07 12:31 ` Alan Cox
0 siblings, 0 replies; 4+ messages in thread
From: Alan Cox @ 2006-02-07 12:31 UTC (permalink / raw)
To: L. D. Marks; +Cc: linux-kernel
On Llu, 2006-02-06 at 20:52 -0600, L. D. Marks wrote:
> I should have added the kernel: 2.6.9-22.0.2.ELsmp #1 SMP with
> nfs-utils-1.0.6-65.EL4
Vendor kernels diverge quite a bit from the base tree (because they
freeze a kernel and backport the critical fixes from thereon). So really
you are best advised to ask your vendor (Red Hat or Centos or whoever)
rather than ask here for that kernel.
Alan
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2006-02-07 12:29 UTC | newest]
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2006-02-07 2:49 Broken NFS (perhaps Cache invalidation bug ?) L. D. Marks
2006-02-07 2:52 ` L. D. Marks
2006-02-07 12:31 ` Alan Cox
2006-02-07 3:10 ` Trond Myklebust
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